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authorYinghai Lu <yinghai@kernel.org>2015-01-15 16:21:50 -0600
committerBjorn Helgaas <bhelgaas@google.com>2015-01-16 10:04:43 -0600
commit2e5e804a836ec89e126443c8efe666b56e4e58a9 (patch)
tree48be342b20df2de53c954ac87249e7bd14fec2f0 /drivers/parisc
parent4e348ba2dd1c1d6ea191566d7591655bbe9dde64 (diff)
parisc/PCI: Clip bridge windows to fit in upstream windows
Every PCI-PCI bridge window should fit inside an upstream bridge window because orphaned address space is unreachable from the primary side of the upstream bridge. If we inherit invalid bridge windows that overlap an upstream window from firmware, clip them to fit and update the bridge accordingly. [bhelgaas: changelog] Link: https://bugzilla.kernel.org/show_bug.cgi?id=85491 Reported-by: Marek Kordik <kordikmarek@gmail.com> Fixes: 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources") Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: "James E.J. Bottomley" <jejb@parisc-linux.org> CC: Helge Deller <deller@gmx.de> CC: linux-parisc@vger.kernel.org
Diffstat (limited to 'drivers/parisc')
-rw-r--r--drivers/parisc/lba_pci.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c
index 37e71ff6408d..dceb9ddfd99a 100644
--- a/drivers/parisc/lba_pci.c
+++ b/drivers/parisc/lba_pci.c
@@ -694,9 +694,8 @@ lba_fixup_bus(struct pci_bus *bus)
int i;
/* PCI-PCI Bridge */
pci_read_bridge_bases(bus);
- for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) {
- pci_claim_resource(bus->self, i);
- }
+ for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++)
+ pci_claim_bridge_resource(bus->self, i);
} else {
/* Host-PCI Bridge */
int err;

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